And yet more unit tests
More unit tests and some refactoring
More unit tests for graph module
Added graph level attributes for graph module
Improved graph module unit test coverage
refactored GraphViz class and combined attribute set classes
updated GraphViz unit test
fixed exception handling for starting ModelBasedEngine
replaced some tabs with spaces
refactored some long methods
changed tabs into spaces
added support MBT events (reporting) and some unit tests
report MBT coverage as graph
MBT perfected and some issues fixed
graphviz path now set from outside
gave Value methods package scope as they are only used from the expression parser
better support for nested MBT models
DoneCondition subscriibe to model events
refactored MBT test sources and split model in main model and submodel
added class locator and partial link text locator, getting HTML attribute